Deegan is a distinctive boys' name in United States, ranking #835 in 2011 with 259 recorded births. This places Deegan in the top 6% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2011 with 259 births ranking #835. In 2011, approximately 1 in every 7,332 boys born was named Deegan. FALLING Recent data shows the name is currently falling.